Until it comes to the wallet.
Well, yes. What I meant is that every customer who walks through the door should be assessed on a level playing field. If the customer looks shifty, I will watch him or her like a hawk. If the customer appears to be in a buying mood, I will suggest things to buy.
It's been a long time since I worked retail; I only worked at 7-11, but I think some of the sales tactics apply at higher level stores.
Bottom line is that salespeople should never treat a customer "special" because they happen to star in some TV show.